Unit 5 Into the unknown Using language 课件-2021-2022学年高中英语外研版（2019）选择性必修第四册

Unit 5 Into the unknown Section B Using language MENU Leading-in Part 1 Part 2 Part 3 While-class After-class Part.1 Leading-in 名词性从句(Noun Clauses) 【语用功能】 名词性从句是在句子中起名词作用的句子, 在复合句中能担任主语、宾语、表语、同位语、介词宾语等, 名词性从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。 Leading in 5 【情境探究】 用恰当的引导词填空并体会它们的功能。 1. Through comparison, he found ____ the locations of the 117 known Maya cities correspond to the positions of the stars. 2. _____ is most extraordinary about these complex structures is ____ they were built without the use of wheels, metal tools or even animal power. 3. The fact ____ Maya society was technologically primitive makes its achievements all the more incredible and mysterious. that What that how Leading in 6 4. But the greatest mystery of all is _____caused the Maya to abandon most of their great cities. 5. _____ Maya civilization collapsed remains a mystery. what Why Leading in 7 Part.2 While-class 【要义详析】 1. 引导名词性从句的引导词: (1)连接代词: what, which, who, whom, whose (2)连接副词: when, where,